michelle obama tells voters. the president knows what they're going through. >> former president bill clinton takes center stage to make his case for re-electing president obama. >>> gunfire erupts as a politician takes the stage during an election night rally. we'll introduce you to the nfl's most interesting han. >>> we begin with a look at today's eye-opener. your world in 90 seconds. >>> i have seen firsthand that being president doesn't change who you are. no, it reveals who you are. >> the first lady makes a personal pitch at the democratic national convention. >> for barack, success isn't about how much money you make. it's about the difference you make in people's lives. >> julian castro, the mayor of san antonio gave the keynote address. >> we all understand that freedom isn't free. what romney and ryan don't understand is that neither is opportunity. >> nascar is a metaphor for the democratic party. everyone else is just here waiting for them to flame out in a giant wreck. >> one of the seal team 6 memb